Temporal disruptor
From Memory Alpha, the free Star Trek reference.
A temporal disruptor was a type of weapon used in the 29th century Starfleet. Essentially a "time bomb" (in the literal sense), the disruptor destroyed its target by fragmenting and distorting the space-time around it to the point where the target could no longer hold cohesion. A small device only about forty centimeters long, the disruptor had an effective range of about 150 meters.
A future version of Captain Braxton, seeking to get revenge against Kathryn Janeway, planted a temporal disruptor aboard the USS Voyager in 2372. In an alternate timeline, it was activated in 2375 and used to destroy Voyager with all hands aboard. In the restored timeline, however, it was discovered by Seven of Nine with assistance from the USS Relativity, and disarmed before Braxton could plant it. The one Braxton used was a force 3 disruptor. (VOY: "Relativity")
